NZQA unit standard 9550 version 5 Page 1 of 4
Title Perform pipe coating and wrapping on a steel pipeline
Level 4 Credits 3
Purpose People credited with this unit standard are, on a steel pipeline, able to: demonstrate knowledge of methods of pipe preparation, and coating and wrapping; evaluate pipework condition, select appropriate repair method, and formulate a maintenance plan; and coat and wrap, and reinstate pipework.
Classification Gas Industry > Gas Transmission Operations
Available grade Achieved
Guidance Information
1 Evidence presented for assessment against this unit standard must be consistent with safe working practices and be in accordance with applicable manufacturer’s specifications, company procedures and legislative requirements.
2 Performance of the outcomes of this unit standard must comply with the following: Health and Safety at Work Act 2015; Health and Safety in Employment (Pipelines) Regulations 1999; Resource Management Act 1991; AS 2885.1-2012 Pipelines – Gas and liquid petroleum Design and construction.
3 References Australian standards (AS) may be found at www.standards.org.au .
4 Any new, amended or replacement Acts, regulations, standards, codes of practice, guidelines, or authority requirements or conditions affecting this unit standard will take precedence for assessment purposes, pending review of this unit standard.
5 Definitions Company procedures mean the documented methods for performing work activities, and include health and safety, operational, environmental, and quality management requirements. They may refer to legislation, regulations, guidelines, standard operating procedures, manuals, codes of practice, or policy statements. Safety Data Sheet (SDS) refers to an informational document provided by the manufacturer regarding the safety and handling procedures and precautions for materials used in the workplace.
MITO New Zealand Incorporated Ó New Zealand Qualifications Authority 2018 SSB Code 101542 NZQA unit standard 9550 version 5 Page 2 of 4
Outcomes and performance criteria
Outcome 1
Demonstrate knowledge of methods of pipe preparation, and coating and wrapping on a steel pipeline.
Performance criteria
1.1 Reasons for coating and wrapping steel pipelines are explained.
Range cathodic protection, corrosion protection, mechanical protection.
1.2 Pipe wrapping and coating types required for different site and job specifications are identified.
Range coal tar enamel, extruded polyethylene, fusion bonded epoxy, poly vinyl chloride, mastic tape systems, petroleum tape, polyglass, coal tar epoxy.
1.3 Potential risks associated with pipe coating and wrapping operations are identified, and methods to avoid them are explained.
Range methods to avoid risks may include – SDS, adhesives, approved waste disposal, trenches, tools and equipment, personal protective equipment, stray current.
1.4 Methods for removal of damaged or disbonded coatings are identified.
1.5 Methods for the preparation of pipework surface for coatings are explained.
Range sand blasting, wire brushing, priming, scraping.
Outcome 2
Evaluate pipework condition, select appropriate repair method, and formulate a maintenance plan for a gas pipeline system.
Performance criteria
2.1 Local authority and regulatory requirements are complied with when evaluating pipework condition.
Range requirements include but are not limited to – notifiable works, environmental impact, legislation, codes of practice, disposal of waste products, easement access conditions.
2.2 Damaged or disbonded coatings are removed.
MITO New Zealand Incorporated Ó New Zealand Qualifications Authority 2018 SSB Code 101542 NZQA unit standard 9550 version 5 Page 3 of 4
2.3 Defects and faults in pipe work steel are measured and analysed to ensure pipeline integrity is maintained.
Range corrosion, pitting, mechanical mill defects, welding defects, dents, gouges, integrity calculations.
2.4 Repair methods selected are appropriate for the defect or fault.
Range repair methods include but are not limited to – repair, sleeve, replace, assemble, remove.
2.5 A plan to complete maintenance activities is formulated.
Range includes but is not limited to – communication and documentation, contractor briefing, time frame, cost considerations, resources, customer requirements, pipe wrapping installation requirements, contingencies.
Outcome 3
Coat and wrap, and reinstate pipework.
Performance criteria
3.1 Pipes are prepared for coating and wrapping.
Range dew point, ambient temperature, corrosion, steel surface temperature, surface treatments, primer, filler tape, putty.
3.2 Pipes are wrapped and coated.
3.3 Waste materials are disposed of.
3.4 Excavations are backfilled.
3.5 Communications and documentation are completed and follow-up actions initiated.
Range includes but is not limited to – work orders, permits, job cards, reports, records, alignment drawings.
Planned review date 31 December 2022
MITO New Zealand Incorporated Ó New Zealand Qualifications Authority 2018 SSB Code 101542 NZQA unit standard 9550 version 5 Page 4 of 4
Status information and last date for assessment for superseded versions Process Version Date Last Date for Assessment Registration 1 6 February 1997 31 December 2018 Revision 2 3 August 2000 31 December 2018 Review 3 24 January 2002 31 December 2018 Review 4 22 May 2009 31 December 2018 Review 5 17 August 2017 N/A
Consent and Moderation Requirements (CMR) reference 0014 This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Comments on this unit standard
Please contact MITO New Zealand Incorporated [email protected] if you wish to suggest changes to the content of this unit standard.
MITO New Zealand Incorporated Ó New Zealand Qualifications Authority 2018 SSB Code 101542